نتایج جستجو برای: active controller

تعداد نتایج: 498682  

2012
Ankita Singh

Active power conditioners have been developed over the years to solve the problems to improve power quality. Among which shunt active power conditioners is used to eliminate load current harmonics and reactive power compensation. The controller ensures that the dc-side capacitor voltage is nearly constant with small ripple besides extracting fundamental reference currents. The PLL block assists...

2009
S. Laflamme T.-Y. Yu J. J. Connor

In this paper, an intelligent controller to control a smart base-isolated masonry structure is proposed. The smart base isolation consists of rubber bearings and a magnetorheological damper. This semi-active scheme takes advantage of the low power requirement of magnetorheological devices to achieve structural control. The controller is capable of mapping the behaviour of the controlled structu...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اراک 1390

ااز آنجایی که ایمنی سازه ها در برابر نیروهای زلزله و باد یکی از نگرانی های اصلی برای مهندسین عمران در ساخت سازه های بلند می باشد، بنابراین بایستی توجه ویژه ای به حفاظت از این گونه ساختمانها در برابر اثرات مخرب باد و زلزله داشت. یکی از روشهای متداول جهت کاهش پاسخ های ناخوشایند تحت بارهای غیرمنتظر? زلزله و باد استفاده از میراگرجرمی تنظیم شد? فعال می باشد. لیکن در کارهای قبلی طراحی و بهینه سازی می...

2002
Mark Heinrich William Evan Speight Mainak Chaudhuri

We show how novel active memory system research and system networking trends can be combined to realize hardware distributed shared memory on clusters of industry-standard workstations. Our active memory controller extends the cache coherence protocol to support transparent use of address re-mapping techniques that dramatically improve single-node performance, and also contains the necessary fu...

Journal: :Fuzzy Sets and Systems 1997
M. V. C. Rao V. Prahlad

A novel fuzzy-logic-based control for vehicle-active suspension is suggested. The vehicle vibration and disturbance are reduced considerably with a fuzzy logic controller, to enhance comfort in riding faced with uncertain road terrains. A quarter-car active suspension system is controlled to reduce the vertical acceleration to a level of, that of, a hypothetical reference model. A new look-up t...

2013
M. Vijayakumar S. Vijayan

Abstract—This paper presents comparative study and implementation of Unified Power Quality Conditioner (UPQC) to eliminate harmonics and reactive power compensation in a single-phase to threephase converter system. The proposed configuration solves typical problems encountered in remote rural area applications, where only a single-phase supply is available and there is a demand for three-phase ...

2009
Min-Soo Kim

This paper presents a technique for improving the performance of active steering fuzzy control systems by adequately changing the widths of triangular fuzzy membership functions. Running curve railway, the wheelsets of conventional vehicles generally misalign radically with the track increasing wheel/rail contact forces and resulting in increased wheel and rail wear. To solve these problems, mo...

2011
Ming-Chang Chen Wei-Yen Wang Shun-Feng Su Yi-Hsing Chien

This paper proposes a novel method for identification of a class of the uncertain active suspension systems by using on-line adaptive T-S fuzzy-neural controller. In reality, vehicles may encounter unpredictable road conditions, e.g., rocks and potholes influencing the dynamic behavior of active suspension systems. These road conditions are not only cause parts of the active suspension system t...

2004
Xiaoyun Wang James K. Mills Rongming Lin

For active vibration control in linear systems, structural response of the controlled structure is the superposition of the response caused by external disturbances, which is defined as the primary response, and the response caused by the active vibration controller, which is defined as the control response. This structural vibration can be cancelled if the control response has equal amplitude ...

2014
Zhouchao Wei

Synchronization of coupled nonidentical fractional-order hyperchaotic systems is addressed by the active sliding mode method. By designing an active sliding mode controller and choosing proper control parameters, the master and slave systems are synchronized. Furthermore, synchronizing fractional-order hyperchaotic Lorenz system and fractional-order hyperchaotic Chen system is performed to show...

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